JP7172835B2 - vehicle seat - Google Patents

Description

The present invention relates to a vehicle seat in which a seat pad is attached to and supported by a seat frame.

This type of vehicle seat includes a seat frame that forms a seat skeleton, a seat pad that forms the contour of the seat and can elastically support an occupant, and a seat cover that forms the front surface of the seat. In a vehicle seat, a seat pad is attached to and supported by a seat frame, and the outer surface of the seat pad is covered with a seat cover. For example, in a vehicle seat disclosed in Patent Document 1, a seat cushion serving as a seat portion has a seat cushion frame and a cushion unit. The seat cushion frame is a substantially rectangular frame when viewed from above, and has a pair of left and right side frames and a center frame. Each side frame is a frame portion that forms a side frame of the seat and extends in the front-rear direction, and is arranged separately on the left and right sides of the seat. Also, the center frame is a frame portion that extends longitudinally between both side frames, and a holding member is fixed to the front end thereof. The holding member is a rectangular tubular member with an open top, and a locking member having a triangular cross-section protrudes from the inner wall of the holding member. A rear pipe frame is bridged and fixed to the rear side of both side frames and the center frame, and a front pipe frame is bridged and fixed to the front side of both side frames and the center frame.

Further, the cushion unit is a member in which a pad corresponding to the seat pad of the present invention and an outer skin corresponding to the seat cover of the present invention are integrated. A plurality of wires extending in the front, rear, left, and right directions and an engaging piece are embedded in the pad. The engaging piece has a plate member embedded in the rear portion of the pad and a hook portion integrally provided with the plate member, and the hook portion protrudes downward from the rear portion of the lower surface of the pad. A wire projecting portion is provided at the front portion of the wire embedded in the pad and extending back and forth. The wire protrusion is formed by bending the wire downward to form a U shape, and protrudes downward from the lower surface of the front portion of the pad. In the known technique, while the cushion unit is arranged on the seat cushion frame, the hook portion of the locking piece provided at the rear portion of the pad is locked to the rear pipe frame. Next, the wire projecting portion provided on the front portion of the pad is inserted vertically into the holding member of the center frame. The cushion unit can be assembled to the seat cushion frame by engaging the engaging member in the holding member from the front and rear with the ring-shaped portion at the tip of the wire projecting portion.

JP 2016-97855 A

By the way, in the seat structure described above, it is assumed that the cushion unit (seat pad, etc.) will be removed from the seat cushion frame (seat frame) during periodic inspection, cleaning, or the like. Therefore, it is desirable that the cushion unit is attached to the seat cushion frame while ensuring detachability. However, in the cushion unit of the known art, no consideration is given to detachability, and in particular, the front wire projecting portion is firmly locked to the locking member within the holding member. For this reason, in the configuration of the known technology, the work of disassembling the seat cushion tends to be complicated, and in particular, it is expected that the work of removing the front portion of the cushion unit will take time when removing the cushion unit. By forcibly removing the wire projecting portion, there is a risk that the locking member of the holding member will be damaged, making it impossible to reuse. The present invention has been devised in view of the above points, and an object of the present invention is to attach a seat pad to a seat frame while ensuring detachability.

As a means for solving the above problems, a vehicle seat according to a first aspect of the invention includes a seat frame that forms a seat skeleton, and a seat pad that forms the contour of the seat and can elastically support an occupant. In the present invention, the seat pad is attached to and supported by the seat frame. In this type of seat structure, the seat pad can be attached to the seat frame while ensuring detachability. desirable.

Therefore, in the seat pad of the present invention, when the direction orthogonal to the seat width direction is taken as the length direction, the first locking portion disposed at one end in the length direction and the The second locking portion disposed on the other end side and the longitudinal direction and the direction orthogonal to the longitudinal direction in a state of being disposed so as to connect the first locking portion and the second locking portion and an extending connecting portion. The seat pad is attached to the seat frame by engaging the first engaging portion and the second engaging portion in a detachable manner with respect to the seat frame in the longitudinal direction. Furthermore, in a state in which the first locking portion is locked to the seat frame, the second locking portion can be engaged/disengaged from the seat frame by bending the connecting portion so as to contract it in the length direction. In the present invention, when the seat pad is assembled, the first engaging portion and the second engaging portion are engaged with the seat frame in a detachable manner from the longitudinal direction. Further, in the present invention, the second locking portion can be engaged and disengaged from the seat frame by utilizing the bending of the connecting portion while the first locking portion is locked, which contributes to ensuring excellent detachability. It is configured.

A vehicle seat according to a second aspect of the invention is the vehicle seat according to the first aspect of the invention, wherein the seat pad and the seat frame are constituent members of a seat cushion that serves as a seat portion. When the longitudinal direction of the seat cushion is the front-rear direction, the first locking portion is provided at the rear edge portion 23 forming one end of the seat pad, and the second locking portion is provided at the other end of the seat pad. provided at the front edge of the In the present invention, it is possible to easily remove the second engaging portion provided at the front edge portion of the seat cushion, which contributes to improvement in workability when disassembling the seat cushion.

A vehicle seat according to a third aspect of the invention is the vehicle seat according to the first aspect or the second aspect, wherein the seat pad and the seat frame are constituent members of a seat cushion that serves as a seat portion. In a state in which the seat pad is assembled to and supported by the seat frame, the wire-shaped second locking portion includes a first portion locked to a locking portion provided on the seat frame, and a second locking portion. A second portion projecting downward relative to the first portion is provided. In the present invention, when the seat pad is removed, the first portion can be disengaged from the engaging portion by, for example, bending the connecting portion using the second portion as a handle.

A vehicle seat according to a fourth aspect of the invention is the vehicle seat according to any one of the first to third aspects of the invention, wherein the wire-shaped second engaging portion is configured separately from the wire-shaped connecting portion, The diameter of the second locking portion is set independently of the diameter of the connecting portion. In the present invention, the second locking portion and the connecting portion are separate members, and the diameter of the second locking portion is set independently of the connecting portion. Therefore, even if the diameter of the connecting portion is limited to a predetermined range due to flexibility, etc., the diameter of the second locking portion can be set independently while considering durability and detachability. becomes possible.

A vehicle seat according to a fifth aspect of the invention is a vehicle seat according to any one of the first to fourth aspects of the invention, wherein the wire-like connecting portion is arranged in a frame-like seat frame, and is a member capable of supporting the seat pad. can also be used as In the present invention, the connecting portion can be used for both the seat pad and the seat frame, thereby contributing to a reduction in the number of parts of the seat.

According to the first aspect of the present invention, the seat pad can be attached to the seat frame while ensuring detachability. Further, according to the second invention, the front portion of the seat pad can be attached to the seat frame while ensuring detachability. Further, according to the third invention, the seat pad can be assembled to the seat frame while ensuring excellent workability at the time of removal. Further, according to the fourth invention, the seat pad can be assembled to the seat frame with good performance. According to the fifth invention, the seat pad can be assembled to the seat frame while reducing the number of parts of the seat.

1 is a perspective view of a vehicle seat; FIG. It is a longitudinal cross-sectional view of a seat cushion. It is a perspective view of a seat frame. It is a schematic enlarged vertical cross-sectional view of the front portion of the seat cushion. It is the perspective view which looked at the seat pad and seat cover from the back side. It is a perspective view of a seat pad. FIG. 2 is a see-through perspective view of a seat pad showing connecting portions and locking portions; FIG. 5 is a schematic enlarged cross-sectional view of the front portion of the seat cushion showing the locking procedure of the second locking portion; FIG. 5 is a schematic enlarged cross-sectional view of the front portion of the seat cushion showing the procedure for engaging and disengaging the second engaging portion; 4 is a schematic enlarged vertical cross-sectional view of the front portion of the seat cushion of Modification 1. FIG. FIG. 11 is a perspective view showing a seat frame, a connecting portion, and respective locking portions of Modified Example 2;

A mode for carrying out the present invention will be described below with reference to FIGS. 1 to 11. FIG. In each figure, arrows indicating the front-back direction, the up-down direction, and the left-right direction of the vehicle seat are shown as appropriate. 2, 4, and 8 to 10 are cross-sectional views of the seat cushion at the first portion of the second locking portion, but for the sake of convenience, the second portion of the second locking portion is also illustrated. In addition, the seat pad and the seat cover are shown with a slight separation. 8 and 9, for the sake of convenience, the distance between the seat frame and the seat pad is exaggerated.

The vehicle seat 2 of FIG. 1 has a seat cushion 4, a seat back 6, and a headrest 8, and is arranged in a vehicle compartment. These seat constituent members (4, 6, 8) are respectively composed of seat frames (4F, 6F, 8F) forming a seat framework, seat pads (4P, 6P, 8P) capable of elastically supporting an occupant, and a seat It has a seat cover (4S, 6S, 8S) that covers the pad. A lower portion of the seat back 6 is connected to the rear portion of the seat cushion 4 (details will be described later) so that it can be raised and lowered. The seat cushion 4 is slidably disposed on the vehicle floor surface FS in the vehicle compartment via slide rails 9 attached to the left and right sides of the lower portion of the seat cushion 4 .

[Seat cushion]
Referring to FIGS. 1 and 2, the seat cushion 4 is a substantially rectangular member as viewed from above, which serves as a seat portion. 30 and a pair of front and rear locking portions 41 and 42 (details of each member will be described later). Here, each side shield 7 shown in FIG. 1 is a resin member arranged on the left and right side surfaces of the seat cushion 4, and is attached to the corresponding outer surface of the seat frame 4F described later (in FIG. 1, for convenience, , common reference numeral 7 to each side shield). In the seat cushion 4, as shown in FIG. 2, the seat pad 4P is covered with the seat cover 4S, and then the seat pad 4P is assembled and supported by the frame-like seat frame 4F. In this type of seat structure, it is expected that the seat pad 4P will be removed from the seat frame 4F for periodic inspection, cleaning, or the like, so it is desirable to ensure the ease of removal of the seat pad 4P. Therefore, in the present embodiment, the seat pad 4P is attached to the seat frame 4F while ensuring detachability by using a configuration (connecting portion 30 and locking portions 41 and 42) to be described later. Each configuration will be described in detail below.

[Seat frame]
A seat frame 4F shown in FIG. 3 is a substantially rectangular frame body that forms a seat frame when viewed from above, and can be made of a material having excellent rigidity such as metal or hard resin. The outer shape of the seat frame 4F is formed by assembling a front frame 10, a pair of side frames 11, and a rear frame 12 into a substantially rectangular shape (in FIG. 11). Here, the pair of side frames 11 are plate-like members forming the side portions of the seat frame 4F, respectively, and are arranged separately on the left side and the right side of the seat. The pair of side frames 11 extend in the front-rear direction, which is the longitudinal direction orthogonal to the seat width direction, and are arranged facing each other when viewed in the left-right direction. A side shield 7 shown in FIG. 1 can be attached to the outer surface of each side frame 11, and the side shield 7 can improve the design and rigidity of the seat. A pipe-shaped rear frame 12 is spanned and fixed to the rear portions of both side frames 11 shown in FIG. A pipe-shaped reinforcing frame 13 is spanned and fixed to the front portions of both side frames 11 , and a front frame 10 (details will be described later) is fixed to the front ends of both side frames 11 .

[Locking part]
The front frame 10 shown in FIG. 3 is a plate-like member forming the front portion of the seat frame 4F, and extends in the left-right direction, which is the seat width direction. As shown in FIGS. 3 and 4, the front frame 10 is formed to generally have an inverted L shape when viewed in cross section. It has a front face portion 10b and a locking portion 14 capable of locking a first locking portion 41, which will be described later. As shown in FIGS. 4 and 8, the locking portion 14 is a plate-like portion formed in a substantially horizontal J-shape in a cross-sectional view. It has a tip portion 14b that is bent back upward and backward to form a U shape from the position 14a. A front inner wall 14w of the tip portion 14b is a portion to which a first portion 51 of a first locking portion 41, which will be described later, is locked. A tolerating release 14c is provided. The locking portion 14 is arranged in the center of the front portion 10b in the left-right direction, has an appropriate left-right dimension, and is arranged so as to be capable of locking a first portion 51, which will be described later.

[Seat Cover]
The seat cover 4S shown in FIGS. 2 and 5 is a surface material that gives the appearance of a seat, and can be made of, for example, fabric (woven fabric, knitted fabric, non-woven fabric) or leather (natural leather, synthetic leather). The seat cover 4S is formed in the shape of a bag capable of covering the seat pad 4P, and is provided with a drawstring purse-shaped opening 15 at its lower side, as shown in FIG. The peripheral portion of the opening 15 is folded inward and sewn to form a tubular shape, and a string member 16 is passed through the tubular peripheral portion. By tightening the string material 16, the opening 15 is gradually closed, and by loosening the string material 16, the opening 15 is gradually opened.

[Seat pad]
The seat pad 4P shown in FIGS. 2 and 6 is a member that forms the contour of the seat and can elastically support the occupant, and is made of foamed resin such as polyurethane foam (density: 10 kg/m ³ to 60 kg/m ³ ). can be formed. The seat pad 4P is a member having an appropriate thickness (vertical dimension) and is substantially rectangular when viewed from above, and has an upper surface 20 serving as a seating surface and a lower surface 21 on the opposite side. The peripheral edge of the seat pad 4P can be divided into a front edge portion 22 that forms a front edge, a rear edge portion 23 that forms a rear edge, a right edge portion 24 that forms a right edge, and a left edge portion 25 that forms a left edge. . A lateral width L1 of the seat pad 4P is defined by the distance between the right edge portion 24 and the left edge portion 25, and is set to fit between the pair of side frames 11. As shown in FIG.

2 and 6, the longitudinal length L2 of the seat pad 4P is defined by the distance between the front edge portion 22 and the rear edge portion 23, and is defined by the distance between the front frame 10 and the rear frame 12. It is set to a size that can be hung. In this embodiment, the trailing edge 23 corresponds to one longitudinal end of the invention, and the leading edge 22 corresponds to the other end opposite to the one longitudinal end. The front edge portion 22 of the seat pad 4P is bent downward, and can be arranged to cover the portion from the upper surface portion 10a to the front surface portion 10b of the front frame 10.例文帳に追加The rear edge portion 23 of the seat pad 4P is also bent downward, and can be arranged so as to cover the portion from the upper side to the rear side of the rear frame 12 . A connecting portion 30, a first locking portion 41, and a second locking portion 42, which will be described later, are arranged at appropriate positions of the seat pad 4P shown in FIG. For example, in the present embodiment, the seat pad 4P is formed by insert molding or the like, and at the same time, the connecting portion 30 and the locking portions 41 and 42 (partially) are integrated into the seat pad 4P in an embedded manner. .

[Connecting part]
The connecting portion 30 shown in FIG. 7 is a frame-shaped member that is substantially rectangular when viewed from above, and is formed by combining and fixing a plurality of wire members 31 to 37 . That is, the connecting portion 30 includes a plurality of vertical wire members (a right vertical wire member 31, a left vertical wire member 32, and a central vertical wire member 33) extending in the front-rear direction and a plurality of horizontal wire members 34 for reinforcement. to 37 (details will be described later). Here, the right vertical wire member 31 is a wire member forming the right end of the connecting portion 30 and extending forward and backward, and the left vertical wire member 32 is a wire member forming the left end of the connecting portion 30 and extending forward and backward. The right vertical wire member 31 and the left vertical wire member 32 have generally symmetrical shapes, and have a length dimension that allows them to be stretched between the front frame 10 and the rear frame 12 shown in FIG. 2 and 7, the front end portion 31a (32a) of the right vertical wire member 31 (the left vertical wire member 32) extends substantially horizontally so as to be arranged on the front frame 10. As shown in FIG. A rear end portion 31b (32b) of the right vertical wire member 31 (left vertical wire member 32) also extends substantially horizontally so as to be arranged on the rear frame 12. As shown in FIG. The right vertical wire member 31 and the left vertical wire member 32 are bent in an inverted trapezoidal shape so as to project downward when viewed from the side, and are configured to be flexibly deformable in the longitudinal direction, which is the length direction. ing. The lowermost intermediate portion 31c (32c) of the right vertical wire member 31 (left vertical wire member 32) extends forward and backward to form the base of an inverted trapezoid and corresponds to the buttock position of the seated occupant. It is arranged on the rear side of the connecting portion 30 .

A central vertical wire member 33 shown in FIG. 7 is a wire member that extends back and forth between the right vertical wire member 31 and the left vertical wire member 32, and is arranged substantially in the center of the connecting portion 30 in the horizontal direction. A front end portion 33a of the central vertical wire member 33 extends substantially horizontally and is arranged at substantially the same position as the front end portions 31a and 32a of the left and right vertical wire members 31 and 32. As shown in FIG. Similarly to the left and right vertical wire members 31 and 32, the central vertical wire member 33 is also bent in an inverted trapezoidal shape so as to protrude downward when viewed from the side, and an intermediate portion 33c located at the lowest point is connected. It is arranged on the rear side of the portion 30 . A rear end portion 33b of the central vertical wire member 33 is bent back horizontally so as to form a substantially U shape when viewed from above so that it can be placed on the rear frame 12. As shown in FIG.

As shown in FIG. 7, each of the vertical wire members 31 to 33 serving as the main body of the connecting portion 30 is provided with a plurality of horizontal wire members (a pair of front horizontal wire members 34, 35, a rear horizontal wire member 36, a pair of horizontal wire members 34, 35, A central horizontal wire member 37) is bridged and fixed. A pair of front horizontal wire members 34 and 35 are fixed across the front ends 31a to 33a of the vertical wire members 31 to 33 with an appropriate space therebetween. The rear horizontal wire member 36 is fixed by spanning the rear ends 31b to 33b of each of the vertical wire members 31 to 33, and the central horizontal wire member 37 is connected to the intermediate portion 31c of each of the vertical wire members 31 to 33. ∼ 33c and fixed. By maintaining the relative positional relationship of the vertical wire members 31 to 33 by the horizontal wire members 34 to 37, the shape of the connecting portion 30 is maintained.

[First locking part]
The first engaging portion 41 shown in FIGS. 2 and 7 is a portion that is engaged with the seat frame 4F in a detachable manner from the front-rear direction. The first locking portion 41 is arranged on the rear edge portion 23 side of the seat pad 4P, protrudes from the lower surface 21 of the seat pad 4P, and can be locked to the rear frame 12 . . That is, the first locking portion 41 is an inverted L-shaped portion in a side view that is integrated with the rear end portion 33b of the central vertical wire member 33, and a vertical portion 41a bent downward from the tip of the rear end portion 33b. and a horizontal portion 41b extending rearward from the vertical portion 41a. In the locking operation described later, the vertical portion 41a of the first locking portion 41 can be locked to the front side of the rear frame 12, and the horizontal portion 41b can be wrapped around to the lower side of the rear frame 12. .

[Second locking part]
The second locking portion 42 shown in FIGS. 2, 4 and 7 is a portion that is locked to the seat frame 4F in a detachable manner from the front-rear direction, similar to the first locking portion 41. It is arranged on the front edge portion 22 side of the pad 4P. As shown in FIG. 7, the second locking portion 42 is made of a wire material that is bent into a U shape when viewed from the front, and is connected at a pair of left and right free ends 54a and 54b, which will be described later. fixed at 30. 4 and 7, the second locking portion 42 includes a first portion 51 projecting from the back side (22x) of the front edge portion 22 of the seat pad 4P and a pair of left and right second portions 52a and 52b. and can be locked to the locking portion 14 (front inner wall 14w) of the seat frame 4F.

[First part, second part]
A first portion 51 shown in FIGS. 4 and 7 is a portion formed in the center of the second locking portion 42 in the left-right direction, and extends substantially linearly in the left-right direction. The first portion 51 is a portion that is fitted into and locked to the locking portion 14 of the seat frame 4F, and has a length that crosses the locking portion 14 from side to side. In the locking operation described later, the first part 51 can be arranged in the locking part 14 and locked to the front inner wall 14w. The outer peripheral surface of the first portion 51 can be covered with a face material 55 having appropriate flexibility, and a thick cloth material such as felt can be used as this type of face material. A pair of left and right second parts (second right part 52a, second left part 52b) is a part that protrudes downward from the first part 51, and is divided into right and left sides of the first part 51. They are arranged symmetrically. That is, the right second portion 52a is formed by bending the right portion of the first portion 51 downward into a U shape, and the left second portion 52b is formed by bending the left portion of the first portion 51 downward into a U shape. It is a part formed by bending into a shape.

A pair of left and right free ends (a right free end 54 a and a left free end 54 b ) of the second locking portion 42 shown in FIG. 7 are fixed to the front side of the connecting portion 30 . The right free end portion 54a and the left free end portion 54b are portions that protrude generally horizontally rearward while being embedded in the seat pad 4P. The right free end portion 54a extends rearward while being disposed between the right vertical wire member 31 and the central vertical wire member 33 of the connecting portion 30, and is bridged between the pair of front and rear horizontal wire members 34 and 35. Fixed. The left free end portion 54b extends rearward while being disposed between the left vertical wire member 32 and the central vertical wire member 33 of the connecting portion 30, and is bridged between the pair of front and rear horizontal wire members 34 and 35. Fixed. In this way, the right free end portion 54a and the left free end portion 54b are fixed to the proper position of the front portion of the connecting portion 30, so that the connecting portion 30 is moved so as to connect the first locking portion 41 and the second locking portion 42. is placed. 4, the first portion 51 of the second locking portion 42 fixed to the connecting portion 30 is exposed from the back side (22x) of the front edge portion 22 of the seat pad 4P, and It is arranged at a position that can be locked to the locking portion 14 .

[Diameter of the second locking part]
In this embodiment, referring to FIGS. 4 and 7, since the second locking portion 42 and the connecting portion 30 are separate members, the diameters of the vertical wire members 31 to 33 (hereinafter referred to as the diameter of the connecting portion 30) The dimension D1) and the diameter dimension D2 of the second locking portion 42 can be set independently. For this reason, even if the diameter D1 of the connecting portion 30 is limited to a predetermined range due to flexibility, etc., the diameter D2 of the second locking portion 42 can be set independently while considering durability and detachability. can be set to For example, it is assumed that the diameter D1 of the connecting portion is set in the range of φ4 mm to φ8 mm from the relationship between flexibility and support performance (spring constant). In addition, in the second locking portion 42, the first portion 51 and the second portions 52a and the like are set to have the same diameter. Therefore, by increasing the rigidity by making the diameter D2 of the second locking portion 42 larger than the diameter D1 of the connecting portion, it is possible to secure excellent locking performance while improving durability. Become. Further, by making the diameter D2 of the second locking portion 42 smaller than the diameter D1 of the connecting portion so as to be easily bent, it is possible to reduce the burden on the operator during the later-described detachment work or the like. . By setting the diameter D1 of the connecting portion and the diameter D2 of the second locking portion 42 to be the same, these raw materials can be used in common, resulting in a configuration that contributes to a reduction in manufacturing costs.

[Installation of seat pad and seat cover]
In this embodiment, the seat pad 4P can be covered with a seat cover 4S as shown in FIG. For example, in this embodiment, the seat pad 4P is covered with the bag-shaped seat cover 4S while loosening the opening 15 of the seat cover 4S. Next, by tightening the opening 15 arranged on the lower side of the seat pad 4P to keep it in a closed state, the seat pad 4P can be covered with the seat cover 4S and these can be integrated. By integrating the seat pad 4P and the seat cover 4S in advance in this manner, both members 4P and 4S can be assembled and removed from the seat frame 4F shown in FIG. 2 at the same time.

[Assembly work of seat pad to seat frame]
Then, referring to FIG. 2, while the seat pad 4P (and the seat cover 4S) is applied to the upper side of the seat frame 4F, the first locking portion 41 is locked to the rear frame 12 from the front. Next, referring to FIG. 8, the second locking portion 42 projecting from the back side (22x) of the front edge portion 22 of the seat pad 4P is locked to the front frame 10. As shown in FIG. At this time, with the front side of the seat pad 4P slightly lifted, the connecting portion 30 is flexed so as to contract in the front-rear direction (the direction of the arrow X1 in FIG. 8) to elastically compress the seat pad 4P rearward. . Then, by lowering the seat pad 4P while compressing it, the first part 51 of the first locking part 41 can be inserted from the release part 14c of the locking part 14 backward and downward (Fig. 8). (see arrow X2 in )). At this time, the seat pad 4P can be smoothly moved up and down while the connecting portion 30 is bent by using the second portions 52a of the second locking portion 42 and the like as handles.

Then, referring to FIG. 8, after the first portion 51 is fitted inside the locking portion 14 through the release portion 14c, the seat pad 4P and the connecting portion 30 are returned to their original states. At this time, the first portion 51 is fitted into the locking portion 14 and then moved forward (see arrow X3 in FIG. 8) to contact and be locked to the front inner wall 14w of the tip portion 14b. Furthermore, in this embodiment, by providing the first portion 51 with the face member 55, the first portion 51 strongly interferes with the locking portion 14 by being crushed by the pressure from the front inner wall 14w. It can be stably locked in a state where it is held. When the first part 51 is locked to the locking part 14, the second parts 52a, 52b shown in FIG. It will happen. Thus, in this embodiment, each of the engaging portions 41 and 42 is engaged with the seat frame 4F in the front-rear direction (longitudinal direction), so that the seat pad 4P is attached to the seat frame 4F as shown in FIGS. It will be assembled. 3, 5 and 6, in the assembled seat pad 4P (seat cover 4S), the right edge portion 24 and the left edge portion 25 are not engaged between the side frames 11. It is contained in a stationary state.

[Engagement and disengagement of the seat pad from the seat frame]
In the vehicle seat 2 shown in FIG. 2, it is assumed that the seat pad 4P and the like are removed from the seat frame 4F during periodic inspection, cleaning, and the like. In this type of seat structure, it is undesirable to take time to remove the seat pad 4P from the seat frame 4F. In particular, from the viewpoint of reuse, damage to each member should be prevented as much as possible. For example, in the conventional disassembly work of the seat cushion 4, the side shield 7 is removed from the seat frame 4F after the vehicle seat 2 shown in FIG. 1 is moved out of the vehicle compartment. After exposing the seat frame 4F, the seat pad 4P and the seat cover 4S are removed from the seat frame 4F. Thus, in the disassembling work of the conventional seat cushion 4, it is necessary to perform a plurality of works in order so as not to damage each member, and in particular, the work of removing the seat pad 4P is burdensome and troublesome for the operator.

Therefore, the seat pad 4P of the present embodiment, referring to FIG. A second locking portion 42 disposed on the front edge portion 22 side, and a connecting portion 30 extending in the longitudinal direction while being disposed so as to connect the first locking portion 41 and the second locking portion 42 . and The seat pad 4P is assembled to the seat frame 4F by engaging the first engaging portion 41 and the second engaging portion 42 to the seat frame 4F so as to be detachable from the front-rear direction. . In this embodiment, in a state where the first locking portion 41 is locked to the seat frame 4F, the second locking portion 42 can be engaged/disengaged from the seat frame 4F by bending the connecting portion 30 in the longitudinal direction. It is configured.

That is, in this embodiment, in the assembled seat pad 4P shown in FIG. 4, the release portion 14c of the locking portion 14 is arranged behind and above the second locking portion 42 in the locked state. Therefore, referring to FIGS. 4 and 9, the connecting portion 30 is flexed so as to contract in the front-rear direction (the direction of the arrow X1), thereby elastically compressing the seat pad 4P. By lifting upward while compressing the seat pad 4P, the first portion 51 of the first locking portion 41 is pulled out from the release portion 14c of the locking portion 14 and removed from the front inner wall 14w. It can be moved backward and upward (see arrow X4 in FIG. 9). At this time, the seat pad 4P can be smoothly lifted while the connecting portion 30 is bent by using the second portions 52a of the second locking portion 42 and the like as handles. Next, after the first portion 51 is disengaged from the locking portion 14 through the releasing portion 14c, the seat pad 4P and the connecting portion 30 are returned to their original states. At this time, the first portion 51 moves forward (see arrow X5 in FIG. 9) above the locking portion 14 and is completely disengaged from the locking portion 14 . After the second locking portion 42 is engaged and disengaged, the first locking portion 41 can be engaged and disengaged from the rear frame 12 by moving the seat pad 4P forward with reference to FIG. .

In this way, in this embodiment, when the seat pad 4P is removed as shown in FIG. 9, the second locking portion 42 can be engaged with and disengaged from the seat frame 4F using the bending of the connecting portion 30. As shown in FIG. With such a configuration, it is possible to avoid a situation in which an excessive force is applied to the second locking portion 42 and the locking portion 14 as much as possible, and the second locking portion 42 and the locking portion 14 can be reused without being damaged as much as possible. state. Therefore, according to this embodiment, the seat pad 4P can be attached to the seat frame 4F while ensuring detachability. Particularly, in this embodiment, as shown in FIGS. 8 and 9, both the locking and disengaging operations of the second locking portion 42 can be performed using the bending of the connecting portion 30, so that the seat pad can be It has a structure that is excellent in both 4P detachability and assembleability (detachability). Furthermore, the seat pad 4P of this embodiment can be removed from the seat frame 4F together with the seat cover 4S by disengaging only the pair of front and rear locking portions 41, 42. As shown in FIG. Therefore, when the seat cushion 4 is disassembled, the seat pad 4P can be removed inside the vehicle with the side shield 7 shown in FIG. can be done quickly and easily.

As described above, in this embodiment, when the seat pad 4P is assembled, the first engaging portion 41 and the second engaging portion 42 are engaged with the seat frame 4F in a detachable manner from the longitudinal direction. be stopped. In this embodiment, in a state where the first locking portion 41 is locked, the second locking portion 42 can be engaged and disengaged from the seat frame 4F by utilizing the bending of the connecting portion 30. It is a configuration that contributes to ensuring sexuality. In particular, in this embodiment, the second engaging portion 42 provided at the front edge portion 22 of the seat pad 4P can be easily removed, and the configuration contributes to improving workability when disassembling the seat cushion. . In this embodiment, when the seat pad 4P is removed, the first portion 51 can be engaged and disengaged from the locking portion 14 by bending the connecting portion 30 using the second portions 52a and 52b as handles. can. In addition, in this embodiment, the second locking portion 42 and the connecting portion 30 are separated from each other, and the diameter D2 of the second locking portion 42 is set independently of the connecting portion 30 . For this reason, even if the diameter D1 of the connecting portion 30 is limited to a predetermined range due to flexibility, etc., the diameter D2 of the second locking portion 42 can be set independently while considering durability and detachability. can be set to Therefore, according to this embodiment, the seat pad 4P can be attached to the seat frame 4F while ensuring detachability.

[Modification 1]
Here, the form of locking between the seat frame and the second locking portion can take various forms in addition to the above-described forms. For example, the front frame 10 of Modified Example 1 shown in FIG. 10 has only an upper surface portion 10a and a front surface portion 10b, and has a simple configuration in which locking portions are omitted (in FIG. 10, for convenience, the front frame is (illustrated by a two-dot dashed line). Therefore, in this modified example, the first portion 51 of the second locking portion 42 is wrapped rearward from the lower side of the front face portion 10b and locked to the back side of the front face portion 10b. Thus, in this modified example, the configuration of the seat frame 4F can be simplified as much as possible, and the second locking portion 42 can be detachably locked. Also in this modified example, the second locking portion 42 can be engaged and disengaged from the seat frame 4F by utilizing the bending of the connecting portion 30 .

[Modification 2]
Further, as for the use of the connecting portion 30, various uses can be assumed in addition to the locking of the seat pad as described above. For example, in Modified Example 2 shown in FIG. 11, a support member for supporting the seat pad (not shown) from the back side is arranged in the frame of the seat frame 4F, and as this support member, the connecting portion 30 and each locking portion 41 and 42 are used. That is, by locking the locking portions 41 and 42 at appropriate positions on the seat frame 4F as in the embodiment, the connecting portion 30 can be arranged within the frame of the seat frame 4F and used as a supporting member. can be done. In this way, in this modified example, the connecting portion 30 can be used as a component of both the seat pad and the seat frame 4F, thereby contributing to a reduction in the number of parts of the seat. Further, in this modified example, only the connecting portion 30 can be fixed to the seat frame 4F by a method such as fastening or welding.

The vehicle seat 2 of this embodiment is not limited to the embodiment described above, and can take various other embodiments. In the present embodiment, the configuration (shape, size, arrangement position, configuration part, etc.) of the connecting portion 30 and the locking portions 41 and 42 has been exemplified, but the configuration of each of these portions is not intended to be limited. For example, the connecting portion and each locking portion may be embedded in the seat pad, or may be attached to the seat pad via an adhesive or a joining member. In addition to the case of using a straight wire material such as each vertical wire material, the connection part can use a wire material bent in the left-right direction at an appropriate position such as an S spring. Further, the connecting portion can be formed in a wire shape (bar shape) or plate shape, and for example, it is possible to replace part or all of each wire material (bar material) shown in FIG. 7 with a plate material.

Also, one of the first engaging portion and the second engaging portion can be provided on the front side of the seat cushion, and the other can be provided on the rear side of the seat cushion. At least one of the locking portions can be formed using a part of the connecting portion, or can be formed separately from the connecting portion. Further, each locking portion may adopt various shapes that can be locked to the corresponding seat frame from the front-rear direction, and may be formed in a plate shape as well as a wire shape (bar shape). Further, it is also possible to configure the structure of the first locking portion to be the same as the structure of the second locking portion and to lock it to another locking portion provided on the seat frame. Also, the second locking portion may have the first portion as an essential configuration and the second portion as an optional configuration. When the second part is provided, the second part can be projected in an appropriate direction with respect to the first part. For example, in the state shown in FIG. can be protruded. Alternatively, the second engaging portion may be formed to have a substantially U shape in front view, and a bar-shaped or plate-shaped second portion projecting in an appropriate direction may be fixed to the right or left side of the second locking portion. Also, the first part and the second part can be provided plurally or singularly. For example, referring to FIG. 7, the second part can be provided in the center of the second locking part, and the first parts can be provided on the left and right sides of the second part. .

Further, in this embodiment, the seat cushion 4 has been described as an example, but the configuration of this embodiment can also be applied to other seat constituent members such as a seat back. In the case of the seat back, the longitudinal direction is the vertical direction, and one of the first engaging portion and the second engaging portion is provided on the upper side of the seat back, and the other is provided on the lower side of the seat back. be able to. Also, the configurations of the seat frame, the seat pad, and the seat cover can be appropriately changed according to the seat constituent members to be applied. For example, the seat cover can be fixed to the seat pad by integral molding or adhesion. The seat cover can also be attached after the seat pad is attached to the seat frame. Also, the configuration of the vehicle seat can be changed as appropriate. For example, the shape, size, and number of seat cushions and seat backs can be changed as appropriate according to the number of passengers expected to be seated. The configuration of the present embodiment can be applied to general vehicle seats such as vehicles, aircraft, trains, and ships.

FS vehicle floor surface 2 vehicle seat 4 seat cushion 6 seat back 7 side shield 8 headrest 9 slide rail 4S seat cover 15 opening 16 string member 4F seat frame 10 front frame 10a upper surface portion 10b front portion 11 side frame 12 rear frame 13 Reinforcing frame 14 Engagement portion 14a Bottom portion 14b Tip portion 14c Release portion 14w Front inner wall 4P Seat pad 20 Upper surface 21 Lower surface 22 Front edge portion (the other end portion opposite to the one end portion of the present invention)
23 trailing edge (one longitudinal end of the invention)
24 right edge portion 25 left edge portion 30 connecting portion 31 right vertical wire member 32 left vertical wire member 33 central vertical wire member 31a-33a front end portions 31b-33b of each vertical wire member rear end portions 31c-33c of each vertical wire member Intermediate portions 34, 35 of each vertical wire member Front horizontal wire member 36 Rear horizontal wire member 37 Central horizontal wire member 41 First locking portion 41a Vertical portion 41b Horizontal portion 42 Second locking portion 51 First portion 52a Second right side Part 52b Second left part 54a Right free end 54b Left free end

Claims (5)

A vehicle seat comprising: a seat frame forming a seat skeleton; and a seat pad forming an outline of the seat and capable of elastically supporting an occupant, wherein the seat pad is assembled to and supported by the seat frame,
The seat pad has a first locking portion provided at one end in the length direction and the other end opposite to the one end, when the direction perpendicular to the seat width direction is taken as the length direction. A second locking portion disposed on the part side, and a longitudinal direction and a direction orthogonal to the longitudinal direction in a state of being disposed so as to connect the first locking portion and the second locking portion an extending connecting portion;
The seat pad is assembled to the seat frame by engaging the first engaging portion and the second engaging portion in a detachable manner with respect to the seat frame, and In a state in which the first locking portion is locked to the seat frame, the second locking portion can be engaged/disengaged from the seat frame by bending the connecting portion so as to contract it in the length direction. vehicle seat. The seat pad and the seat frame are constituent members of a seat cushion that serves as a seat,
When the longitudinal direction of the seat cushion is the front-rear direction, the first engaging portion is provided at a rear edge portion forming the one end portion of the seat pad, and the second engaging portion is provided at the seat pad. 2. The vehicle seat according to claim 1, which is provided at a front edge forming said other end of the vehicle seat. The seat pad and the seat frame are constituent members of a seat cushion that serves as a seat,
In a state in which the seat pad is assembled to and supported by the seat frame, the wire-shaped second locking portion has a first portion locked to a locking portion provided on the seat frame. 3. The vehicle seat according to claim 1 or 2, further comprising: and a second portion projecting downward relative to the first portion. The wire-shaped second locking portion is configured separately from the wire-shaped connecting portion, and the diameter of the second locking portion is set independently of the diameter of the connecting portion. The vehicle seat according to any one of claims 1 to 3. The vehicle seat according to any one of claims 1 to 4, wherein the wire-shaped connecting portion is arranged in the frame-shaped seat frame and can be used as a member capable of supporting the seat pad. .

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